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#36850

average

statistics

data analysis

hard

120 sec

A school has two sections of a math class. Section A has 20 students, and their average (arithmetic mean) score on a recent exam was 80. Section B has 30 students, and their average score on the same exam was $x$ . If the average score for all 50 students combined was 84, what is the value of $x$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.